Compact Class-D Mono Amplifier With 1600W Maximum Power & 1-Ohm Stability!

800W RMS at 1Ω with Wired Bass Boost Remote & Variable Low-Pass Filter

The Pioneer GM-D8701 delivers high-efficiency subwoofer amplification in a compact Class-D design that's 50% smaller than traditional Class-AB amplifiers. This monoblock amplifier produces 300W RMS at 4Ω, 500W RMS at 2Ω, or 800W RMS at 1Ω, providing flexible power options for various subwoofer configurations. The 1-ohm stable circuit design allows connection of multiple subwoofers while maintaining clean, powerful bass reproduction.

The wired bass boost remote control enables real-time adjustment from 0 to 18dB at 50Hz, allowing optimal bass level tuning according to listening preferences and music characteristics. Variable low-pass filter (40Hz-240Hz) with 12dB/octave slope provides precise frequency control for seamless integration with your system. The advanced Protection Control System monitors internal temperature and automatically moderates input levels to prevent circuit shutdown. With MOSFET modulated power supply, high-density split-dome convection heat sink, automatic signal sensing, and speaker-level inputs for factory system integration, the GM-D8701 delivers professional-grade subwoofer performance in a space-efficient package.

✔ Key Features & Benefits

✔ Class-D Efficiency: Compact design 50% smaller than Class-AB amplifiers with high power output and minimal heat generation
✔ 1-Ohm Stable Circuit: Safely drive multiple subwoofers at 1Ω impedance for maximum power delivery and flexibility
✔ Wired Bass Boost Remote: Real-time adjustment from 0 to 18dB at 50Hz for optimal bass level control from driver's seat
✔ Variable Low-Pass Filter: Adjustable frequency control from 40Hz to 240Hz with 12dB/octave slope for precise system tuning
✔ Protection Control System: Intelligent thermal management automatically moderates input to prevent shutdown and ensure reliability
✔ MOSFET Power Supply: Modulated power supply with high-capacity capacitor for stable performance even at high output
✔ Automatic Signal Sensing: Automatically detects RCA or speaker-level inputs and powers on with receiver
✔ High-Density Heat Sink: Split-dome convection design provides extreme heat dissipation for continuous high-power operation

Technical Specifications

Class: Class-D Amplifier
Channels: Mono (1-Channel)
Maximum Power: 1600W at 1Ω, 1000W at 2Ω, 600W at 4Ω
RMS Power (CEA-2006): 800W at 1Ω, 500W at 2Ω, 300W at 4Ω
Continuous Power Output: 800W x 1 at 1Ω (14.4V, 100Hz, ≤1% THD)
Continuous Power Output: 500W x 1 at 2Ω (14.4V, 100Hz, ≤1% THD)
Continuous Power Output: 300W x 1 at 4Ω (14.4V, 20Hz-240Hz, ≤1% THD)
Load Impedance: 1Ω to 8Ω (1Ω stable)
Frequency Response: 10Hz - 240Hz (+0dB, -3dB)
Signal-to-Noise Ratio: 100dB (IEC-A Network)
Distortion: <0.5% (10W, 100Hz)
Input Sensitivity: 0.2V - 6.5V (RCA), 2.0V - 26V (Speaker Level)
Low-Pass Filter: Variable 40Hz-240Hz, 12dB/Octave Slope
Bass Boost: 0 to 18dB at 50Hz (Wired Remote Control)
Inputs: RCA, Speaker-Level with Auto-Sensing
Outputs: Dual Speaker Terminals
Fuse: 40A x 2
Power Supply: 14.4V DC (10.8V - 15.1V allowable)
Current Consumption: 22A at Continuous Power (4Ω)